7.8

CVE-2021-47017

ath10k: Fix a use after free in ath10k_htc_send_bundle

In the Linux kernel, the following vulnerability has been resolved:

ath10k: Fix a use after free in ath10k_htc_send_bundle

In ath10k_htc_send_bundle, the bundle_skb could be freed by
dev_kfree_skb_any(bundle_skb). But the bundle_skb is used later
by bundle_skb->len.

As skb_len = bundle_skb->len, my patch replaces bundle_skb->len to
skb_len after the bundle_skb was freed.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.8 < 5.10.37
Linux ≫ Linux Kernel Version >= 5.11 < 5.11.21
Linux ≫ Linux Kernel Version >= 5.12 < 5.12.4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.24% 0.145
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/3b1ac40c6012140828caa79e592a438a18ebf71b
Patch
https://git.kernel.org/stable/c/5e413c0831ff4700d1739db3fa3ae9f859744676
Patch
https://git.kernel.org/stable/c/8392df5d7e0b6a7d21440da1fc259f9938f4dec3
Patch
https://git.kernel.org/stable/c/8bb054fb336f4250002fff4e0b075221c05c3c65
Patch